Features sleeve/ball bearing , the fan can be work very quiet and silent, you may hard to hear the noise of it , but it also offer you 47 CFM airflow . The fan can work smoothly for 50,000 hrs at 25 ℃.
The air radiator cross flow fan has an operating temp of -10℃ ~ 70℃ super high temperature range. Aluminum construction with great waterproof function, making it ideal for most outdoor environments, and can be used for heat dissipation of display screens.